Question
Students are baking a cake. They mix together all the necessary ingredients and pour them into a pan. Then
they place the pan into the oven to cook for 40 minutes.
Which statement BEST explains why baking a cake is evidence of a chemical reaction?
© The state of matter of some of the ingredients changed while being cooked.
© The total mass of the Ingredients was the same before and after they were cooked.
@ The temperature of the ingredients increased as they absorbed thermal energy from the oven.
© The Ingredients formed a new substance after they were cooked in the oven.
Answer
The temperature of the ingredients increased as they absorbed thermal energy from the oven.